Number 28 would be y= -52x+148
Fraction of shampoo left = 
Solution:
Given fraction of full shampoo
.
Fraction of shampoo Margaret used 
Fraction of shampoo left = Full shampoo – fraction of shampoo used

To make the denominators same do cross multiplication.




Hence
of the shampoo bottle is left.
Answer:
x = 30
Step-by-step explanation:
because the interior angles of a triangle = 180° so if you subtract 90° you get 90. in order to get 90 you can use the equation x + 2x = 90 which you will then get x = 30
Answer:
f−1 (x)= x/3 +1 /3
Step-by-step explanation:
The ratio is 9/12 and you can write it as a proportion. so you multiply 9 by 100 then divide it by 12. answer is 75% chance